Plant Cell Culture

In a callus culture

A:

increasing level of cytokinin to a callus induces shoot formation and increasing level of auxin promote root formation

B:

increasing level of auxin to a callus induces shoot formation and increasing level of cytokinin promote root formation

C:

auxins and cytokinins are not required

D:

only auxin is required for root and shoot formation

Answer: A

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Which of the following is used in the culture of regenerating protoplasts, single cells or very dilute cell suspensions?

A:

Nurse medium

B:

Nurse or feeder culture

C:

Both (a) and (b)

D:

None of these

Answer: C

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Organogenesis is

A:

formation of callus tissue

B:

formation of root and shoots on callus tissue

C:

both (a) and (b)

D:

genesis of organs

Answer: B

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Which method of plant propagation involves the use of girdling?

A:

Grafting

B:

Cuttings

C:

Layering

D:

Micropropagation

Answer: C

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What is meant by 'Organ culture' ?

A:

Maintenance alive of a whole organ, after removal from the organism by partial immersion in a nutrient fluid

B:

Introduction of a new organ in an animal body with a view to create genetic mutation in the progenies of that animal

C:

Cultivation of organs in a laboratory through the synthesis of tissues

D:

The aspects of culture in community which are mainly dedicated by the need of a specified organ of the human body

Answer: A

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Questions for: Plant Cell Culture